Forest cover by
U.S. state and
territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) Program of the U.S. Department of Agriculture Forest Service (FIA).[1] Tree volumes and weights are not directly measured in the field, but computed from other variables that can be
measured.[2][3]

This is only the total amount of timberland, the actual
forest cover for each state may be significantly higher.[4][5]

List by state, district, or territory

Map of above ground woody biomass across the contiguous United States c. 2000[6]

Notes

^The forest percent is the percent of land that is forested (excluding bodies of water). Data for Puerto Rico, the Virgin Islands and Guam is from 2013. Data for the Northern Mariana Islands is from 2015. Data for American Samoa is from 2012. Data for the District of Columbia is from 2018.

^There is a forest on
Palmyra Atoll,[8] but there is no information about what percentage of land the forest covers.

^The U.S. territories are American Samoa, Guam, Northern Mariana Islands, Puerto Rico and U.S. Virgin Islands. The
U.S. Minor Outlying Islands are not counted.

^The FIA defines the Southern region of the U.S. as Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, and Virginia.

^The FIA defines the Northern region of the U.S. as Connecticut, Delaware, Illinois, Indiana, Iowa, Kansas, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Ohio, Pennsylvania, Rhode Island, South Dakota, Vermont, West Virginia and Wisconsin. The District of Columbia is not counted.

^The FIA defines the Interior West region of the U.S. as Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming.